Corey Lynn Diamond, MD
NPI 1811983398ActiveIndividual· Internal Medicine· Jonesboro, AR
Internal Medicine (MD) in Jonesboro, Arkansas, trained at University of Arkansas College of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $1,209,974 for 19,631 claims, against $207,212 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $548.64 in all, mostly food and beverage.
Overview
| NPI | 1811983398 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2005 |
| Last updated in NPPES | Apr 28, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | E1526 | AR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (AR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,075 |
|---|---|
| Services billed | 5,753 across 42 procedure codes |
| Paid by Medicare | $207,212 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,631 · 36,710 30-day fills |
|---|---|
| Patients | 752 |
| Total drug cost | $1,209,974 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Arkansas College of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Medical groups
- St Bernards Physician Clinics IncJonesboro, AR · 217 clinicians
- St Bernards Hospital Inc.Jonesboro, AR · 186 clinicians
Hospital affiliations
- Baptist Memorial Hospital Jonesboro, Inc.Jonesboro, AR
- Crossridge Community HospitalWynne, AR
- St Bernards Five Rivers Medical CenterPocahontas, AR
- St Bernards Medical CenterJonesboro, AR
- White River Medical CenterBatesville, AR
Other facilities
- Home Health Professionals & HospiceHome health agency · Jonesboro, AR
- St Bernards Home CareHome health agency · Jonesboro, AR
- Trinity North Home Health LLCHome health agency · Jonesboro, AR
- The Springs JonesboroNursing home · Jonesboro, AR
Industry payments (Open Payments)
- 2025$548.64 · 32 payments from 11 companies
- 2024$610.25 · 37 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $148.24 | 10 |
| Pfizer Inc. | $100.46 | 6 |
| Otsuka America Pharmaceutical, Inc. | $52.02 | 2 |
| Phathom Pharmaceuticals, Inc. | $43.17 | 4 |
| Astrazeneca Pharmaceuticals LP | $42.75 | 2 |
What the 2025 payments were for
- Food and Beverage$548.64 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 76 internal medicine physicians in Jonesboro · All internal medicine physicians in Arkansas